Hugo Alberto Bottazzini has written:
'Rivero'
Hugo Rolland has written: 'Il sindacalismo anarchico di Alberto Meschi'
Hugo Alberto Miranda has written: 'El caso Pananti y el derecho a la tierra en Bolivia'
Hugo Carrillo has written: 'Mortaja'
Hugo Zapata has written: 'Hugo Zapata, 1977-1987'
Hugo Bethmann has written: 'Die Hebezeuge'
Hugo Murno has written: 'A y O'
Hugo Potyka has written: 'Pflegefall Althaus'
Hugo A. Braun has written: 'Berching/Opf'
Hugo Riva has written: 'El Cid'
Hugo Cabieses has written: 'Economia peruana'
Hugo Sempilius has written: 'Hvgonis Sempilii..'
Hugo Ramirez has written: 'A era feroz'